Calculating mechanism.



F. L. FULLER.

CALCULATING MECHANISM. APPLICATION FILED AUG. 13, 1909,.

Patented Aug. 31, 1915.

'10 SHEETSSHEET 1.

WITNESSES: INVENTOR Q A JJZZZL 'F. L. FULLER.

H CALCULATlNG MECHANISM.

APPLICATION FILED AUGQIS, 1909.

Patented Aug. 31, 1915.

10 SHEETS-SHEET 2.

'lNVENTOR wax? I J ATTORNEY F. L. FULLER.

CALGULATING MECHANISM. APPLICATIONI'FILED AUG. 13; 1909.

Patented Aug. 31, 19.15.

10 sHEETs-sHEET'a IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII/IIIIIIIIIIIIIIII h g INVENTOR BY. I g 2% M 59%) 1 ATTORNEY F. L. FULLER.

CALCULATING MECHANISM.

APPLICATION FILED AUG. I3, 1909.

Patented Aug. 31, 1915.

I0 SHEETS-SHEET 4.

i /&

ATTOR N EY F. L. FULLER.

CALCULATING MECHANISM.

APPLICATION FlL'ED A}JG.13|1909. I 1 v P Patented Aug. 31, 1910.

I I I I I I I I I v I I 5 I I I I I I I I I I I I I I I I I i I 7' a i I QC 5 I I 1 INVENTOR qgfizf 54/; I ATTORNEY F. L. FULLER CALCU LAHNQ MECHANISM. APPLICATION HLED AHGI13, 1909.

Patented Aug; 31, 1915.

10 SHEETS-SHEET 7 ATTORNEY- F. L. FULLER.

CALCULATLNG MECHANISM. APPLICATION FILED I1\UG.13, 1909.

Pafented Aug. 31, 1915.

I0 SHEETSSHEET 8.

Q apr g;

F. L. FULLER.

CALCULATING MECHANISM.

APPLICATION FILED AUG.13,1909.

Patented Aug. 31, 1915.

10 SHEETS-SHEET 9. r

F. L. FULLER.

CALCULATING MECHANISM.

APPLICATION FILED AUG. 13, 1909. v

' Patented Aug. 31, 1915.

I0 SHEETSSHEET 10.

INVENTOR 1 ,,@%1 AT TORNEY "UNITED STATES PATENT OFFICE.

EnEnEaIcx L. FULLER, E DAYTON, OHIO, AssIGNon TO THE NATIONAD CASH REGISTER comrm, or DAYTON, omoyn CORPORATION or 01110, (INCOR- POKLTED IN 1-906.)

To all whom it'may concern:

Be it known that I, FREDERICK L. FULLER,

a citizen of the United States, residing at. 'Dayton, in the county of Montgomery, n the State of Ohio, have invented certain.-

new and useful Improvements in Calculating Mechanism, of which 'the following isa specification.

" anism located on the left hand side of the] My invention relates to calculating mecha'n'ism,1and has for its object the production of a simple mechanism which can be readily ,operatedto add and tabula'te num-- machine: Fig. 3 is a side elevationon line 3-3 of Fig. 2, showing the machine with left hand frame removed, and disclosing the full stroke mechanism, the frame of the adding mechanism, the tappet shaft, and

the total and zero key and its connections.

Fig. 4 is a side elevation on line 4-4 of Fig. 1, showing clearly the arrangementof the actuating segments, type racks, adding device; printing mechanism, and their connections. Fig. 5 is a plan view on line 5--5 of Fig. 1, showing the arrangement of arts of the machine, specially the paper an ribbon feeds. Fig. fi-is a plan View on line 6-6 in Fig. 1, showing the sub-total key, the driving. mechanism, the catch for type rack frame and their connections. Fig. 7 is a rear elevation on line 7.7 of Fig. 3 withcase and printing mechanism removed,- showingfully the arrangements of parts.

Fig. ,8 is a front elevation online 88' of Fig.3, partly in section', l.ooking toward the rear of the machine; 9 is a plan view,

" partly insection, on line 9-.-9 of Fig. 3,

itions-sj Fig. .1 i aplan.

showing the arrangement of the main shaft and. adding mechanism, "and, their connectii t an. ine. ilk-19 i I,

Specification of Letters Patent.

-having its otherend fastened to the cross eALcUnAmNs MECHANISM.

Patented Aug. 31, 1915 I Application filed August 13, 1909. 4 Serial No. 512,627.

construction and arrangement of operating segments and'their shaft. Fi 11 is a plan view, partly.in section, on line 11-11 of Fig. 3, showing the construction and arrangement of type racks, their frame, shaft and connections. Figs. '12, 13, 14 and 15,

show side elevation of adding mechanism in different positions which its parts assume when operated.

Referring to the several drawings, it will be seen that the mechanism there shown is contained in a frame Iwork composed of a base B, and sides C,-D, protected by the cover E. In this frame are placedthe several shafts upon' which the different parts of the mechanism are mounted. The main or driving shaft F, has fixed on one of its ends at the outside of the case the-main or operating lever 1, which lever has amovement forward and backward of one sixth V of a complete revolution. Fast to the shaft F, near its right hand end, is the casting 2 (Figs. 6, 7 and 9), having a front end or pr0]ection'- 3;; and on, its opposite end is mounted a spring actuated pawl, 4. Fast to the side of the casting 2 is the stud 1 (Figs. 5 and 7) which works in the slot 15 of the ribbon-feed slide 16, and also fast to said casting is the large spiralspring 2,

rod 2". This spring operates to return the. lever 1 to its normal opsition when released by the olperator after movement; y

Loose y mounted on the shaft F next to the casting 2 is a'cam wheel'5, in the edge of which are out six cam notches, 6, and from the side of which project six studs,'7. Loosely inounted on said shaft F beside the cam wheel 5 is the special lever 8, whose lower end or foot 9 is double cam-shaped, and has a cam notch 10 on its front edge.

On shaft F, near said lever 8 is fixed an.

arm 11, on which arm is fixed the stud 12, which works in the slot 13 of the paperfeed-slide, 14:. (See Fig. 5.) On said shaft 5 F, near its left hand end is loosely mounted the special lever 17 whose lower end or foot18 is single cam shaped, and which has a cam notch 19, like the notch 10 in the l ver s. ar eemp: h h f 100 F is an arm 20, and a ratchet sector 21, and gear segment 22. (See'Figs. 3, 7, 8 and 9.)

I Mounted. just above and parallel to the shaft F is the shaft G, on the right hand end of which is fixed the cam arm 23 (Figs. 6, 8 and 10), and beside this cam arm, and

loosely mounted on said shaft G is the-arm 'foot 26, which rests on one of the studs 7'of the wheel 5, and rocks said arm 24 to .unlatch the'printing mechanism. If the lever 1 be violently moved, the arm 24, through the studs, 7, which raise the foot 26, will throw the hook 25 under the projection 3- of the casting 2, and lock the'main lever 1. By'

then releasing the pressure on the lever 1 it willbe unlocked and may then be drawn forward. Next to'the arm 24 is the arm 28, rigidly fixed to the shaft G, and carrying-a stud 29, which acts in the cam notch 10- of. the special lever 8 on shaft F (see Figs. 3, 4, 5 and 6). On'the middleof the shaft G are loosely mounted the actuating segments 30, from which project through the cover E handles 31; and from which deend arms, 32, terminatin in ball-surfaces 33, which act in the"slo ts, 8, of type slides 77, to operate them. (See Figs. 3, 4 and 10.) The front portions ofthese segments 30, have gear teeth 34, which drive adding wheels 57, and the rear portions thereof have shaped teeth, 35, which co-act with studs 35, and hold said se ments in the positions to which they may fie turned. On

these segments 30, are also projections, 36,

upon which the rock shaft bears. To the left of the segments is fastened the arm 37 (Fig. 3), the rear portion of which is slotted as at 38. In this slot 38 the stud 39, fixed on the arm 20, works and rockssaid arm 37, .and shaft G. (See Figs. 2,3, 8' and 10.)

Mounted on' the arm 37 isthe stud 39,

which works in the cam notch 19, of special lever 17' to force said lever back to its nor-.

mal position when'mo'ved' therefrom. To the lower parts of, the arms 28. and 37 is fixed the rock shaft 40, which when swung double ratchet sector 21, to limit the movement of operating lever 1, tb one-sixth of a revolution forward and backward, and prevents any return movement thereof until 52 .is driven by the segment said full movements have been effected. This ratchet dog 41 is held in either of two positions, where it is forced by the high portion 42 on the ratchet sector 21, by the spring pressed pawl 43 pivoted to said frame D. (See Figs. 2, 3 and 8.)

The shaft H is mounted in frames C, D,

Loosely mounted on this shaft H is the adding frame composed of side frames (1, 1), connected by shafts c, d, c," screwed to them. Fast to the right hand end of shaft H is a notched disk, 44, in whose notch, 45, a stud,

46, fast to the casting 2, enters and locks shaft H from further rotation "and from overthrowing. See Figs. 4, 6, 7, 8 and 10. Between the said frames at, b, on theshaft H are fixed cams 47 (Figs. 8,10, 12 and 15) which are part of the transfer mechanism of the adding device. On the left hand end of the shaft H, and just outside the'frame b is fixed a collar, 48, having a notch, 49, in which works the spring-pressed pawl 5O,v

in front of and a little below the shaft F.'

which pawl is pivoted to a disk, 51, fast to the gear 52; said disk 51 and car 52 being loosely mounted on the shaft The gear left, withdrawing the outer end 54 from the notch 6, in the cam Wheel 5, and holding it out of such notch, until the said wheel 5 is rotated some distance, and until the special lever 8 has been forced-back to its normal position, when it will be released,-

and its spring will press it against the side of the wheel 5, until another notch 6, comes opposite to it, when it will enter said last mentioned notch 6. (See Figs. 7, 8 and 9.) If the special lever 8 has notbeen operated the plunger stud 53 will remain in the notch- 6 across the face of the cam Wheel 5, and when said wheel 5 is rotated by the main lever 1, through the pawl 4 contacting with a notch 6, the cam wheel will force said stud 53 outward and away, thereby rocking the said adding frame on the shaft H, and will throw the gears attached to the adding wheels into mesh with the gear teeth 34 of the segments 30, where they will remain until the forward movement of lever 1 has been' finished, when'another notch 6 on said wheel 5 will have advanced opposite to the stud 53, and allow said stud to entertherein, when the adding frame will drop forward uritil'it rests on the stud 54" attached car 22, fixed,

. and, by its action, rocks the adding frame 1 1 ments, 30, as is done by the special lever 8.

to the.main frame C, thereby withdrawing the gears or addingwheels from the gear teeth of the segments30. Fixed to the rear end pr arm of the frame b'is a stud 56' (Figs. 2, 7, 8 and 9) ,which is in line with the plun gerstud 53, and which is acted upon by the camor foot 18 of the special lever '17,

upward, throwing the gears on the adding wheels into mesh with the gears on the seg Loosely mounted on the shaft f of the adding frame, and equally spaced apart, are adding wheels, 57, corresponding in number .to the actuating segments 30.

' 1, 2, 4, 5, 12 and 15). Fixed to the right ten ts, 60, and the secondary cams 61, the achand side of each of these wheels 57 are the gears 58, and projecting from the opposite side of the wheels are the studs 59. Mounted loosely upon shaft d, are the actuating detuating dei'ents being positionedto the right ofthe adding wheels 57, and working in gears 58 of said adding Wheels, and co-actmg with secondary cams 61 placed respectively'at the left of the wheels 57. Said secondary cams 61 are operated by studs 59 placed on the faces of said wheels 57. Fixed by the cams-47 fixed on the shaftH (see Figs. 12, 13, 14 and 15). The pawls are loosely; mounted on the shaft e, and so spaced that they act on the secondary cams 61, as explained, The actuating detents60 and the pawl 65 are spring-tensioned toward each other by the spring 66 attached to both of them, which forces them to normal position when displaced.

- vMounted loosely on the shaft c is the re-- storing frame 67, which normally rests on the rod 68, fixed to the frame a, b, (Fig. 9),

and, through projection 69 on one of its arms coming into contact with the .stud 70 fixed to the cam 47, i's'lifted, and its edge 71, hearing under the curvedsurfaces 72, of

the secondary cams 61, operates to force them upward to their normal positions where they are held by pawls 65,, entering the notches 64 of the secondary cams 61.v (See Figs. 4, 5', 12.) When the'stud 70 passes the projection 69 the restoring frame 67 will drop until it rests on the rod 68, when its edge 71 will beout of the path of the secondary cams '61.

.(Figs.

chine, and to-it is fixed the printing slideframe L, composed of sides 73, 74, cross' piece 7 5 and cross rod 76, fixed to the same. blidably mounted in this slide frame L are the printing slides 77, in the lower portion 7 of which are square openings 78, in which work the ball-shaped surfaces 33, of segments 30, and by which the slides are connected to segments 30. (See Fig. 4.) On

the upper edges of slide 77- are figures 79 (Figs. 1, 2, and 8) and on the rear upper edges are the raised type figures 80.; (Figs. 1, 4 and 7.) Both of these sets of figures are so placed that when the handles 31 of segments 30 stand opposite figure on scale 81, s on cover E (Figs. 1 and 2), the figures 79 will be opposite to the sight opening 82 of cover E, and the type figures 80 will stand.

opposite to printing platen 82. Fast to crossrod 76 and to cross shaft 83 are springs 35 84, which force the printing slide-carriage L, toward platen 82 when the frame is unlatched by action of the lever 1. The print ing slide-frame is fast to shaft I and is'nor mally in the position shown'in Figs. 4 and 90 13 of the drawings, being held a ainst teh sion of the springs 84 by the hooked end 27 of the'sarm 24 catching over the rdjection 85 fast to the hub of the shaft I. See Figs.

1, 4, 10 and 11.) 9

Fixed to the shaft I next to the projection 85 is the hub 86 to which is fixed the arm 87-, which is acted upon by the cam arm 23 fixed to the shaft G which forces said arm 87, and, through it, the printing frame forward 100 against tension of the springs 84 until the hook 27 drops back of the projection 85, thereby holding said frame in normal position.- Fixed to the hub 86 is the depending arm 88, which,-when the printing frameis 1 released contacts with the adjustable stop 89, preventing the type on slide-77 from striking the paper'too hard, and holding them away from said operation. I At the rear of the main frame is fastened paper after the printing the frame K, in which is mounted the paper roll 90, the platen 82 the pressure roll frame 91, and the ink ribbon 92, and their mechanisms, and also the guard 93, throu h 115 whose opening 94 the figures printed on t e strip 95 are read.- This guard 93 serves'to guide strip 95 from the roll between the pressure roll 96, and platen 82*, and over said platen and its upper edge 97,, and is 129 formed to facilitate the'severing of the strip by the operator. "The pressure-roll frame 91 .is fixed to theshaft' 98 mounted in the frame K. Fast to the outer end of the shaft 98isthe handle 99, and depending fromsaid 135 handle 99 is the frame'100,fto which is. a't tached one end of a spring 100, the, other end of-which is fastto the frame }K'. By

I 65 D, (Figs.'1,3,11) near the rearjof the ma; Y

The shaft I is mounted in'the frames-C, this means the pressure roll isheld'inf'cgntact "with the platen-82 but can liwked away by the handle 99 when the paper strip 95 is to be inserted between the rolls.

On the shaft 101 of the platen 82 is fixed a ratchet wheel 102 (Figs. 1 and-5), which is operated by the paper feed slide, 14, being lifted by the stud 12 on the arm 11, fast to the main shaftF, the slide being kept in contact with the ratchet 102 by the spring 103, fast to it, and to the cross rod 83. To

the shaft 104, which is mounted in the frames C, D, is fast the ratchet 105, which, in connection with the spring pressed pawl 106,'fast to the ribbon feed slide 16, operates the ribbon feed mechanism. The slide 16 is raised by the stud 42 attached to the casting 2 working in the slot of the slide 16. The shaft 104 is prevented from backward movement by pawl 107 pivoted to shaft 108, spring pressed into "the teetli of the ratchet wheel 105.

Mounted loosely onthe shaft 108 are the spring-drawn arms 109, one for each actuating segment 30. To these arms are fixed wheels 114, which are driven by worm gears 115 fixed to shaft 104, which shaft is turned forward by the awl 106, mounted in the slide '16. This 'shde 16 is moved upwardly and downwardly at each operation of "the lever 1.

Operation: Having described the several parts of my machine, and their connections,

will now explain the operation of the same when adding and printing figures, assuming the parts to be in their zero or normal position, with handles 31 above the zeros on the scale 81, no figures showing through the upper opening 82, and zeros appearing through the lower sight openings 82, of the case E.

The handles 31 of segments'30 are -'depressed until they stand opposite to figures in, scale 81 corresponding to the figures selected and the same figures 79 on-the face of printing slides 77 appear in opening 82, and the corresponding type 80 on the rear of printing slides 77 stand opposite to. the platen 82*, as these slides; 7 7 have been ele vated as many spaces as segments 30'have been depressed, by the ball surfaces 33working. in slots' 78 of the slides 77. The operating lever 1 is then drawn forward with the, following results: At the beginning of its.

movement, through the pawl 4 contacting with face of notch 6 of rotat' cam wheel 5, arm 24 will be lifted by pm with foot 26 of arm 2;, raising hook 27 from contacting projection" 85 fast to hub of printing frame L, unlatching said frame L, allowing it to be propelled against the platen 82, and

through the ink ribbon 112 printing the fi ures, that were set up by segments 30, on the paper strip 95. At this time the adding frame 6 through the contacting ofplunger stud 53, mounted in arm a of said adding frame, with the face of the cam in wheel 5, will be rocked on shaft H, and the gears 58 of the adding wheels 57, brought into mesh with gear teeth 31 of segments 30. Just 'at thistime the rock shaft 40, through the stud 39 in arm 20 fast tosh aft F,'working in slot 38 of arm 37 to which shaft 40 is attached, will be swung upward and, coming in contact with surfaces 36 on segments 30 that' have been depressed, will force segments 30 and slides 77 back to their normal positions. During this movement of lever 1' the print ing slide frame L, through the contact of cam arm 23 fast to shaft F, with arm 87 fast to hub of said slide frame L, will be forced away from platen 82*, and be again latched 'in its normal position. On the backward movement of segments 30 the adding Wheels teeth or numbers as were indicated at sight opening 182, when. segments 30 were depressed, and printed on the strip During the forward movementof lever 1, and near the completion of it, the paper strip 95, through its feeding slide 14: and its connections withsaid lever 1, will be advanced one spacebringing the figures printed on the strip 95 into view in opening 94 of guard 93; and likewise the ink ribbon 92 will be advanced one space by its feeding slide 16, and its connections with lever 1, through the worm gears 115 and worm wheels 114. On the backward movement-0f the lever 1,

which isas'sisted by spring 2, the cam shaft H, through segment 22, fast to shaft F, working in gear 52 fast to disk 50, both be- I ing loosely mounted on shaft H, and which have been rotated backward one revolution ,by forward movement of lever 1, bringing pawl 50 in engagement with notch 49 in collar -18 fast to shaft H, will be given a forward rotation, carrying the transferring cams 47. These cams advance any adding wheels57 of higher denomination one tooth d'r number when any adding wheel 57 of lower denomination, that is to their right, has been given a complete revolution,that

30. But if the operation is repeated and any wheels 57 have been advanced more than is when more than nine units have been nine units or spaces, and the cam shaft H is g ven arevolution, then the followingreward movement of lever 1, as before described, the shaft H, in rotating, will bring the primary cam 47 that'is in line with the displaced secondary cam 61, into contact withit, and force it downward from posi- -tion shown in'Fig. 13 to that shown in Fig.

14. This downward movement of secondary cam 61 will, through the stud 62, fast to secondary cam 61, and projecting from it under the heel 63 of theactuating detent 60 to the left of it, rock saidactuating detent 60, on the shaft d, and advance the -adding wheel 57, related to said actuating detent" 60, one toothor number, and will also hold said wheel in this advanced position against accidental movement, thus transferring one number to the adding wheel 57 next hlgher v in. denomination than the adding wheel which has been advanced by segments more than nine units or numbers. These primarv cams 47 are arranged spirally about shaft H; the one in advanced position being at the-right, and in path of the secondary cam 61 that is at the left of the units adding wheel 57; and as these primary cams 47 are .given'a full forward revolution at each backward movement of lever 1 all adding wheels 57 to the left of these wheels 57 to which have been added more than nine nu-.

merals will be'given the extra movement of one number at the proper time. As the shaft Hu'has almost completed its movement the stud 70 fast to one of theprima'ry cams 47 will contact with foot 69 of resetting bar '71,

elevating the bar 71, which, coming in contact with any depressed secondary cam 61, will return them to normal position, where they will be held'by pawl workmg in notch 64 of secondary cam 61. All parts are then in 'normalposition ready for the next operation.

Operation of printing total shown on adding wheels, which is the sum of figures print.-

ed on the strip, and at the'same operation body of stud 53, and through it; force the addmg frame upward, throwing gears 58 of adding wheels 57 into mesh with gear.

teeth 34 of actuating segments 30. The segments 30 are then depressed byhandles 31, thereby turning the adding wheels 57 backward, until studs 59 on wheels '57 contact with top curved surfaces 61 of secondary earns 61, when they can go-no farther,-and' in which position they are all at-zero. This operation, through ball connections 33 of segments with slots 78 of slides 77, elevates these slides until the figures corresponding to those that were on the total wheels 57 are brought to View in openings 82 of'case, and the type 80 corresponding to these figures are brought opposite platen 82 in printing position. The main lever 1 is then drawn forward, first unlatching printing slide frame, thereby printing the total on thestrip 95, then forcing back to normal position the special or zero lever 8, whichwill allow the adding frame to drop down- -ward, carrying the gears 58 out of mesh with teeth 34 of segments 30, and allowing plunger stud 53 to move toward the cam wheel 5; but as this wheel has begun its forward movement the end 54 ofs'tud 53 cannot enter slot 6' of wheel 5, but will ride against the side of said wheel until the wheel 5 has been given one-sixth of arevolution, when another slot 6 will beopposite stud 53, and allow said stud to enter it.

As this stud 53 was'ou t of.path of move-' ment of the cam-face of notch 6, when the wheel 5 was rotated, it would not raise the adding-frame to connect the, adding gears with gears of the segments, the adding j wheels 57 will not have been rotated vforward-by the backward movement of segments 30, as in'the regular operation-of adding and printing when'i the special lever returning the adding wheels to zero position,"thereby clearing the machine for an; 1 other operation: The special or zero lever 8 at the-right of handles 31 of actuating segments 30 is drawn forward bringing one of the cam surfaces on foot 9 of same in .contact .with head 55 of plunger 53, mounted.

arm a of total adding frame, thereby withdra-wing the other end 54 of this stud -53,-ou't of the -cam-slot 60f cam-wheel 5.'

At the same time the other cam surface on l5 foot 9 of lever 8 will come in contact with Shad not been 0 erated. The paper and ribbon will befe forwar by this 0 eration, as in-the regular opefation of a ding and-printing, and the printing frame will pe algan forced to normal position and there ate e I Operation of printing total shown' ,011 adding wheels, and at the sameti mele'aving the total on the wheels to which more figures are to be added,-which'is' called print.

ing a sub-total1,-Thefspecial orsubftotal key 17 at the. left of the handles '31 ofl'actuating segments 30, is drawn forward, -larin'ging the cam-surface-IS on the Lfbot' ofispecia-lkey 17, in contact'with'stud 56,'; fast to armof the adding-frame, theife iylforcing the adding-frame upward, throwing gears 58 of the adding wheels 57 intoj-fmeshQw-ith the gear'teeth 34 of theactuating segments" 30.

The segments 30. arethen depgesjsed as 'bet fore, being stoppedhyfthe studs-59-on thewheels 57 contacting with thefltopzedge 61* of the secondary-cams 61, thus bringing the" total, pposite'. the platen 82.

adding wheels to zero,--. and the printing slides- 7 7 to printing position with corresponding figures that were shown on the The main lever 1 is then drawn-forward, causing the printing onthe strip 95, and the returning of the special'sub-total-key to normal position, but as plunger stud'53 has not been withdrawn from cam-slot 6 of the cam wheel 5, the wheel 5 when rotated by the; main lever 1, Will, through stud 53, retain the.

' I ures, as desired, toth'e sub-tot'al as printed.

adding frame in elevated position, Where it was forced by the special subtotal key 17, thereby holding the adding wheel gears58 in mesh with the gears 34 of thesegments 30; and when these segments are'being returned by forward motion of main lever 1, they will rotate the adding {wheels for ward, returning them to'the position they occupied before they were turned back by downward movement of the segments 30,

and they will display thesame figures as before they'were turned back, which was the total of the figures printed on strip 95 before "special subtotal key 17 was operated.

The printing frame will be .relatched, the strip 95 will be advanced sothat sub-total will be in view, the ribbonv fed downward as before, and the Inachinewill be ready for the further'addition and printing of fig- Having thus described my. invention, 1 1. In mechanism-of the described," a series of manually operable actuating segments;'ajseries ofslides bearing printable characters, and a ball and groove connection between'each of said said slides. Y 2. Inmechanism of-the kind described, a series of manually operable actuating .segment's; aj-serises of slides :bearing printable characters; a ball and groove connection be tween each offsaid segments and one of said slides, and a series ofspring-detents connected, respectively, with-said actuating. segmeets to holdthem in their set positions.

lnmechanism of the kind described, a series ofmanually operable-actuating seg-' ments; .a series of slides bearing printable characters; a ball and'groove connection between e'ach f said segments and one of said slides a 'serles. of spring-detents connected,

- res ectively, with said actuating segments to ho (1 them in 'their set positions, and means I forreturningsaid segments to their initial I platen positioned .to co-actwith said slides;

positions 'after' operation. 1

4. In mechanisin'of the ,kind, described, a

pivoted frame, a series of slides carried thereby bearing printable characters; a

means for forcing said frame. and .slides toward said platen for printing; means for:

withdrawing said frame and slides from segments and one of said platen, and means for latching said frame in the position to which it is Withdrawn. v

5. In mechanism of the kind described, a rotatable cam-disk; a pivoted frame so connected with said disk as to be rocked by its 'action;.an actuator for rotating said disk;

means, independent of said disk, for rocking said frame, and means, operable by said actuator, for returning said independent means to its initial position after 0 eration.

,- 6..-In mechanism of the klnd described, a

rotatable cam-disk; aframe containing adding 'mechanism'positioned to be movable by the rotation of said disk; means, independent of said disk, for moving said frame and to prevent saiddisk from moving said frame.

7. In mechanism of the kind described, a'

rotatable cam-disk; a frame containing adding mechanism positioned to be movable by the rotation ofsaid disk; means, independent of said disk, for moving said frame and to prevent said disk from 'moving said frame; and means forreturning saidindependent means to its initial position after its operation.

' 8. In mechanism of the kind described, a main lever for operating said mechanism; a

printing mechanism normally latchedin non-operable position; a pivoted latch for latching said printing mechanism and ar-- ranged to co act with said main lever to lock itand stop it if moved too rapidly when said printing mechanism is being unlatched for operation.

.9. In a mechanism of the class described, the combination with a main driving shaft,

of a frame, movable printing slides sup ported by said frame, a-platen against which means for successively actuating said detents, and'positivemeans operable upon the completion of an operation of sald mechanical means, positively to restore said actuat ing detents in the event of a failure of said spring means.

11. In a machine of the class described,

.the combination. of a rotatable cam disk, a

frame containing adding mechanism and arranged to be moved by rotations of said disk,

. said printing slides may be projected, a rock shaft adapted to rock said frame to pro]ect and an adjustable lever for moving the frame and preventing the disk from moving said frame.

12. In a machine of the class described, the combination with operating devices, of a rotatable cam disk, a frame containing accumulator mechanism and arranged to be moved by rotations of said disk, an adjustable lever for moving said frame and preventing the disk from moving the frame, 16

Witnesses JXo. N. VAN DnMAiv, N. 0. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the commissioner of Patents,

-- Washington, D 0. 

